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The Cat4Ward header for 2005–2019 Nissan 4.0L V6 features 1-5/8" primaries and a shorty design to improve flow over the factory manifold. Constructed from 409 stainless steel with mandrel-bent tubes, it includes JBA's Firecone collector, oversized ports, 3/8" machined flanges, extra-thick collector domes and factory-style emission connections with hardware for a reliable, no-leak installation.
JBA 04-15 Nissan 4.0L V6 1-5/8in Primary Raw 409SS Cat4Ward Header
